Siemens FC700A manual Bus overview, Modifying the impedance of the various C-Bus cables

Page 15

 

 

 

 

 

 

 

Bus systems

6.1

Bus overview

 

 

 

 

 

 

 

 

 

 

 

 

 

Features

 

C-Bus

I-Bus

SynoLOOP

SynoLINE600

LON-Bus

Data Bus

Field of applica-

 

 

 

 

Local data bus

Local data bus

tion

 

 

 

For addressable

For collective

parallel ind.

 

Local system bus

Inside control unit

for floor indicator

 

 

detectors

detectors

panel, synoptic

 

 

 

 

panels

 

 

 

 

 

 

panel or relay

 

 

 

 

 

 

 

Speed of trans-

57kBaud

1000kBaud

2 messages/sec

(Direct current

78kBaud

SPI-Bus 2KHz

mission

 

signal)

 

 

 

 

 

 

Length of line

Max. 1000m

Max. 3m (only

 

Max.

Max. 500m as

 

 

 

Max. 150Ω/300nF

free topology

Max. 1000m

 

 

150/250Ω/4∝F

 

 

(G51 ∅ 0,8: 1400m)

inside cabinet)

See chapter 16

Max. 1000m as

 

 

See chapter 16

 

 

 

 

 

 

stub line

 

 

 

 

 

 

 

 

Number of users

… 16

… 16

… 128

1 address

… 32

… 24

connected or

(Max. 25 detec-

LON-Bus de-

C-Bus devices

I-Bus modules

D-Bus devices

Max. 8 addresses

addresses

 

tors)

vices

 

 

 

 

 

Number of wires

2

26

2

2

2

6

 

 

(+3 wires for emer-

 

 

(+3 wires supply)

 

 

gency operation)

 

 

 

 

 

 

 

 

 

 

 

Type of cable

Twisted 1)

Flat cable

Twisted

Twisted

Twisted

Twisted

 

 

(Un-twisted per-

(Un-twisted

 

 

 

 

missible)

permissible)

 

 

Loop line

 

✔

–

✔

–

–

–

T-branch

 

–

–

–

–

✔

–

 

 

(See chapter 18)

 

 

 

 

 

 

 

Short-circuit proof

Yes

 

Yes

 

 

 

 

 

Each user con-

–

Each user con-

No

No

Yes

 

 

nected with line

nected with line

 

 

 

 

 

 

 

 

separator

 

separator

 

 

 

Network structure

Master/master

Master/slave

Master/slave

Master/slave

Master/slave

Master/slave

Scanning

 

Event-controlled,

Cyclic,

Cyclic

 

Event-controlled,

 

 

 

- typ. all 64s

–

presence moni-

Cyclic

 

 

presence monitoring

Event controlled

- Interrupt on

toring

- typ. all 250ms

 

 

 

 

 

 

 

alarm

 

(All 60s)

 

Principle

 

Serial Bus

 

Sensor/actor-Bus

Conventional

Network

 

 

 

C-Bus

- Cerberus proto-

 

 

 

- Echelon Chip

Serial bus

 

 

- Cerberus protocol

col 'K31'

- Current gain

 

 

- Cerberus protocol

(LON protocol)

- Cerberus proto-

 

 

- Collision detection

- Serial 8bit

principle

 

 

- Manchester coding

- SPI/Motorola

- Start-up: daisy-

- Voltage levels

- Cerberus

col

 

 

 

 

chain

 

specific telegram

 

 

 

 

 

 

 

 

1Calibrated according to cable impedance: 50Ω (MICC) / 110Ω (G51, ø 0.8mm, not shielded)

6.2Modifying the impedance of the various C-Bus cables

C-Bus standard cables have a characteristic impedance of 110Ω. The driver and end-of-line resistors are soldered to solder lugs and can be adapted accordingly with other characteristic impedances (see diagram chapter 6.2.1).

1.Explanation

A cable must be terminated with resistors. The resistance value must correspond to the impedance of the cable. Each C-Bus user has four end-of-line resistors (Ri). In addition two driver resistors (Rd) are integrated on the p.c.b. In order that the resistors can be exchanged easily they are all soldered to solder lugs.

C-Bus p.c.b.

Ri

Rd

B3Q700

R31 ... R34

R49, R50

E3H020

R173, R174, R177, R178

R180, R183

The driver resistors specify the current on the C-Bus. In order that the signal on the

C-Bus always has the same amplitude (1.35Vpp), the following correlation is valid:

Rd = Ri x 3,65 (45Ω < Ri < 200Ω)

 

15

 

 

Siemens Building Technologies

007836_a_en_--.doc

Fire & Security Products

03.2004

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Contents Planning Page Modifying the impedance of the various C-Bus cables 12.3 21.1 About this document Place Signification ConventionsDocument identification Modification indexSymbols and their meaning Safety regulationsSignal words and symbols Signal words and their meaningAssembly, installation, commissioning and inspection work Safety-relevant working instructionsClassification and meaning of additional symbols Electrical installationsTesting the product operability Modifications to the system design and the productModules and spare parts Stations Main featuresTechnical data FC700A Physical structure Logical and physical structureLogical structure LinkingLON-Bus Bus systemsBus SynoLOOP and SynoLINE600Bus overview Modifying the impedance of the various C-Bus cablesRd = Ri x 3,65 45Ω Ri 200Ω Ri Ohm DiagramHardware Bus stationsStation Types of stationsBUS Logical Areas Main CPU limits Limitations of C-Bus participantsLimitation of visible texts on a FC700A Control terminal limits FC/FTMaximum number of I-Bus-modules Limits of 5V supplyGateway limits FG Specify hardware required Control unit FC700A ConfigurationBlock diagram ModulesFC700A Component Order-No Description Auxiliary power supplyPlexiglas door to B3Q700 FC/FT FeaturesControl terminal B3Q700 FC/FT OptionsPlace of the E3I040 LON interface FT Place of the E3I020 RS232 module FTInstallation possibilities FT EN54 requirements Power supplyControl unit FC700A Loop C-Bus12.7 Modules H23G230 H26G220 H28G200 Range of cabinets H23 / H26 / H28Recessed mounting H23G230 and H28G200 H23U220 H23U230 H23G230 H23Z230H28Z010 H28G200 14 19 accessories Input/output modules Special featuresLine modules OverviewRoom Detection line addressable SynoLOOPSynoLINE600-Ex Detection line collective SynoLINE600/-ExAddressable detection line Connection factors, line resistances and capacitan- cesTerminology and abbreviations Collective detection lineMax. C Max. R Line resistance and capacitanceOverview of the available modules with control outputs Control modulesApplication of control modules Means of linkingControl outputs remote station type FT700A Control outputs station type FC700AAll-AREAsingle-AREA CPU-overlapping controlsMimic Display panel outputs K3R072Z3I530 F12A470 Relay outputsK3G060 F12A100LON-Bus as stub line LON-Bus devicesLON-Bus as free topology 18.4 LON/Mimic Display p.c.b K3I050LON I/O card K3I110 H23G230 B3Q580 Indicator devices B3Q580 and B3Q590/595Main features GatewayApplication Modules Remote transmission Remote transmission deviceInterfacing Printer interface Application variant FTApplication variant FC Concept Power supplyPower supply for the control unit Auxiliary power supply24V / 0,63A Operation with power supply from control unitEmergency power supply Specifying battery capacityCapacity values for standard configurations Quiescent current table Alarm concept Cerberus Alarm Concept CACPrinciple of the Cerberus alarm concept Organization of system operation Determine the alarm organizationCommissioning Functions Parameterization, Flash programming27 FC700A modules in alphabetical order FC700A modules in alphabetical order EOL22 Spare partsB3Q580/590/595, B3R051 Configuration sheetsList of configuration sheets Auxiliary power supplyCable, terminals, relay Z1K030 Inscription setsView a Control terminal FT Control terminal FT700ADisplay & operating terminals Details see .7 / 17.9 Externally placed modulesPage 007836aen

FC700A specifications

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